Perez 'more motivated than ever'

The Mexican rookie withdrew from the Canadian Grand Prix after first practice, not feeling 100 per cent following his heavy crash at Monte Carlo.

He was replaced at Sauber by Pedro de la Rosa.

Speaking ahead of the European Grand Prix on Thursday, Perez said he is confident he will have no problems this weekend.

"Yeah, all good," Perez told reporters in Valencia. "I've done a lot of training to get back, a lot of regeneration to get into a good level of training. I'm very motivated, more than ever, to come back and I'm looking forward to being back this weekend."

The rookie admitted he was told by doctors that returning to action in Canada was "too optimistic" following his accident.

"The doctors told me that we were a bit too optimistic to go back after the accident because it was a very big accident in Monaco, and after such an accident you need quite a bit of time to recover because it's in the head.

"I was feeling alright. I was feeling a bit dizzy but I was quite optimistic, but after the first session, even though the time was very competitive, I was not feeling 100 per cent and not good at all. I was feeling very dizzy during the changes of direction and under braking so I decided to wait a bit more and be back when I was 100 per cent right."

And Perez said there was no doubt in his mind that his huge will not affect him when driving at full speed.

"I'm sure it's going to be a good weekend for me. If I think 100 per cent inside the car I think I will be as quick as I was straight away in Canada."